21438007462 has 8 divisors (see below), whose sum is σ = 32157651600. Its totient is φ = 10718790264.

The previous prime is 21438007453. The next prime is 21438007483. The reversal of 21438007462 is 26470083412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95239 + ... + 227917.

It is an arithmetic number, because the mean of its divisors is an integer number (4019706450).

Almost surely, 2^21438007462 is an apocalyptic number.

21438007462 is a deficient number, since it is larger than the sum of its proper divisors (10719644138).

21438007462 is a wasteful number, since it uses less digits than its factorization.

21438007462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213470.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 21438007462 in words is "twenty-one billion, four hundred thirty-eight million, seven thousand, four hundred sixty-two".